气液固三相放电反应器中等离子体化学过程增强

Enhancement of plasma chemistry process in a gas-liquid-solid three-phase discharge reactor

采用动态快速扫描UV-V is吸收光谱,研究了双向窄脉冲电源引发的等离子体化学反应器中,固体填料对气、液、固三相放电脱除废水中靛蓝二磺酸钠(ind igo carm ine,IDS)的影响.实验结果表明:固体填料的填充对气液两相放电反应器中的等离子体化学过程具有明显的增强作用;增强的程度由填料的特性决定,相同条件下,填充介质球填料时的处理效果好于填充导体填料时的,而且玻璃球介质填料又优于陶瓷填料;填充介质球的等离子体反应器中IDS的脱色为一级反应.

Influence of the solid packing on decolorization of IDS （indigo carmine） in the solid-liquid-gas three-phase discharge plasma reactor initiated by a bipolar pulsed power was studied by dynamic fast scanning of UV-Vis adsorption spectrum of the solution. Experimental results show that filling of the solid packing into the liquid-gas two-phase discharge plasma reactor can enhance the chemical process in the reactor. Dielectric properties of the solid packing materials determine the degree of the enhancement. Water treatment performance of the reactor packed with the dielectric spheres is much better than that of the conducting materials under the same experimental conditions, and in addition, dielectric glass beads are better than the ceramics. Decolorization of the IDS in the plasma chemistry reactor packed with dielectric packing is a pseudo first-order reaction.